1-Butyl-2,3-dimethylimidazolium hexafluorophosphate, CAS: 227617-70-1

Key Applications:

• Electrochemical Systems & Ionic‑Liquid Electrolytes

• • Serves as a hydrophobic, wide‑electrochemical‑window electrolyte for supercapacitors, dye‑sensitized solar cells (DSSCs), and redox‑flow systems.
  • PF₆⁻ anion provides low viscosity relative to TFSI analogs, enabling improved ion mobility in mixed‑solvent systems.
  • The 2,3‑dimethyl substitution increases cation symmetry, reducing rotational barriers and enhancing thermal and electrochemical stability.
• Solvent for Organometallic & Transition‑Metal Catalysis

• • Effective medium for C–C coupling, hydrogenation, and oxidation reactions due to high polarity and low coordinating ability.
  • Hydrophobicity allows biphasic catalysis with easy product separation and catalyst recycling.
• Extraction & Separation Science

• • Useful in liquid–liquid extraction of metal ions (e.g., rare earths, transition metals) due to strong PF₆⁻ hydrophobicity.
  • Demonstrates tunable partitioning behavior for aromatic hydrocarbons, phenolics, and bio‑derived molecules.
• Thermal Fluids & Heat‑Transfer Media

• • High thermal stability and negligible vapor pressure make it suitable for heat‑transfer fluids, thermostats, and high‑temperature reaction media.
  • The 2,3‑dimethyl pattern reduces crystallinity, improving low‑temperature fluidity.
• Lubrication & Tribology

• • Ionic liquids with PF₆⁻ anions form robust boundary films on steel and ceramic surfaces.
  • Demonstrated reductions in friction coefficients and wear rates under high load and temperature.
• Materials Processing & Nanomaterials Synthesis

• • Acts as a templating medium for nanoparticle synthesis (Au, Pt, Fe₃O₄).
  • Supports formation of nanostructured carbons, polymer composites, and ionic‑liquid‑modified membranes.

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